Mechanical movement



J. W. HOFFMAN.

MECHANICAL MOVEMENT.

Patented Nov. 13, 1888..

(No Model.)

I IIIIIIIIIIIIIII IIIA 'NITED STATES PATENT rrrcn.

JOHN WV. HOFFMAN, OF PULLMAN, ASSIGNOR TO PULLMANS PALACE CAR COMPANY, OF CHICAGO, ILLINOIS.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 392,610, dated November 13, 1888.

Application filed February 23, 1888. Serial No. 264,966. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. HOFFMAN, a cltizen of the United States, residing at the village of Pullman, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Mechanical Movements, which I desire to secure by Letters Patent of the United States, and of which the following is a specification.

My invention relates to mechanism for converting an alternating rotary movement into a continuous rotary movement-that is, should the movement of the driving-pulley be reversed, as, for example, when the latter is placed on the axle of a car, and the ends of the cars made to change places as to advanced positions in travel, the movement derived from said pulley is continued in one direction. \Vith this mechanism it is immaterial in transmission of rotary motion for driving machinery of any kind in which direction the initial rotary movement may be, as the result will be the same so far as relates to propelling said machinery.

I am aware that mechanism for converting reciprocating into a continuous rotary movement embodying some of the features of my invention has beenused.

For a detail description of my invention, reference is had to the accompanying drawings, whlch form a part of this specification, in which- Figure 1 is an elevation, and Fig. 2 a vertical longitudinal section.

In this example I have shown the mechanism as suspended, wherein A A are hangers and a a horizontal shaft rotatably supported therein. On shafts a are placed separate loose sleeves a, b, and b, sleeves a and b being restrained from longitudinal movement by collars, or in any convenient manner. On shaft a is mounted and secured a pulley, B, that may be connected by belting with the driving-pulley. Central hangers, D, support a beveled gear, D, having a vertical axis.

On sleeve 1) is secured a beveled gear, E, that engages with gear D. Sleeve a has socured upon it a beveled gear, E, that also engages with gear D. Provision is made of the clutch character for the coupling of sleeves b with the other two, wherein one or more shoulders, e and j, are respectively formed on the inner edges of sleeves a b. Each end of sleeve 1) has a shoulder formation that is counterpart to that of the sleeve to which it is adjacent. 5 The length of sleeve 1) is such that when one end is disengaged the shoulder or shoulders of the other end may pass the shoulders of the contiguous sleeves. Of the dental formation from which the shoulder is derived the edge thereof opposite said shoulder is inclined to form an acute angle with the shoulder, as for example, at 4?, whereby inclined edges or faces of adjacent sleeve ends abut each other when engaged. Sleeve 1) is caused to rotate with the shaft a by means of a stud, d, secured to said shaft and engaging with the slot a in the sleeve. hen pulley B is rotated in. a direction to cause the inclined or cam faces, as at i, to bear against each other, the result, as apparent, 0

causes sleeve b to move longitudinally in which the slot passes on the stud until said sleeve is disengaged from one of the outer sleeves and brought into engaging contact with the other. Slot a is preferably inclined to the axis a, to facilitate the shifting movement of sleeve 1). When the rotation of pulley B is in a direction to disengage sleeve I) fromsleeve 1) and engage it with sleeve a, the latter takes its rotary motion directly from said sleeve 1). WVhen 8o pulley B is rotated in the opposite direction, the sleeve 1) is shifted to engage with sleeve b, the rotary movement is transmitted through gears E, D, and E to sleeve a, thus continuing the movement of the latter in the same direetion. On sleeve a is a pulley, l3, from which power may be transmitted for utilization of continuous rotary movement, where desired.

C represents a loose pulley upon which to shift the driving-belt when it is desired to throw the movement mechanism out of gear. In this example I have shown the mechanism so constructed that the motion is re ceived first on the shaft a and transmitted to 5 the sleeves. This order may be reversed by changing the clutches between sleeves, so that the shoulders of the middle sleeve face in the same direction and the others correspond.

Having thus described my invention, what I rco claim as new, and desire to secure by Letters Patent, is-- 1. In mechanism for deriving continuous rotary from alternating rotary movement, a shaft, a sleeve mounted thereon that is slotted to permit longitudinal movement thereof, said sleeve being also provided with shoulders or clutch formations at its ends, a stud secured to the shaft and engaging with the slot of said sleeve, a second sleeve loosely mounted on the shaft in proximity to the former, upon which is mounted a gear-wheel and having its end adjacent the first-named sleeve shouldered or adapted to engage therewith, a third sleeve having also mounted upon it a gear-wheel and having its end adjacent the said first-named sleeve shouldered or adapted to engage therewith, and an intermediate gear between said sleeve-gear to connect and change the direction of rotation of the latter.

2. In amachine for deriving continuous rotary from alternating rotary movement,a shaft, a, a sleeve, I), mounted thereon and slotted to adapt it for movement longitudinally thereof, a stud, d, fixed to said shaft to co-operate with the slot in securing rotation of the sleeve with the shaft and permitting longitudinal movement of said sleeve, sleeves a and b loosely mounted on the shaft and adapted to alternately engage with sleeve b, gears E and E, mounted, respectively, on sleeves aand b, and a gear, D, intermediate the two former gears, substantially as set forth.

3. The combination of shaft a, provided with a stud, d, sleeves a, b, and b, the latter sleeve slotted, gears E and E, respectively, on sleeves Z) and to, intermediate wheel, D, pulley B on shaft a, and pulley B on sleeve a, substantially as and for the purpose set forth.

JOHN W. HOFFMAN.

Witnesses:

J osErH RIDGE, E. L. HUBER. 

